OR
OR gate
A positive-logic element whose output is true when at least one input is true.
Schematic
Symbols · AND
AND gate
A logic element whose output is true when all stated positive-logic inputs are true.
Schematic · AND
What it represents
A logic element whose output is true when all stated positive-logic inputs are true.
On a schematic, identify the input signal polarity and the required simultaneous conditions and trace the gate output and its destination. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
An AND gate combines logical conditions; it does not specify relay-contact current capacity or a safety integrity level.
Terminal letters describe electrical roles, not package pin numbers. Check the selected public datasheet for the actual pin assignment, polarity and any internally connected terminals before completing the drawing.
How to read it
- Identify the input signal polarity and the required simultaneous conditions.
- Trace the gate output and its destination.
Information to show or reference
- Label the input signal polarity and the required simultaneous conditions.
- Cross-reference the gate output and its destination.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.
A distinction that matters
An AND gate combines logical conditions; it does not specify relay-contact current capacity or a safety integrity level.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
SN74HC08 — AND gate logic
Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
Explore related references
Put the reference into a drawing workflow.
Elora Grid helps electrical teams work with drawings, specifications and equipment information. Explore the drafting workflow or join the early-access waitlist.